I am using openSuSE for production at work, and also on my private main machine. The “killer-app” that makes this distro outstanding is snapper (for snapshot rollbacks), which is tightly integrated. It has a rather steep learning curve somewhere between mint and arch. But it is probably the most mature and stable rolling release distro out there.
I’m curious what your use-case is, that prompts you to write that is not usable for you. I have used Wayland on KDE for years without any issues. Even multi monitor setups with weird adapters and HDR seem to just work.